Description

Tetraboron Disodium Heptaoxide, Hydrate is an inorganic boron compound with significant industrial utility. This material serves as a versatile source of boron and sodium oxides, making it valuable for processes requiring controlled release or specific elemental ratios. It is primarily sought by manufacturers in the glass, ceramic, and specialty chemical industries for applications in flux formulations, glaze production, and as a precursor for advanced materials. Its consistent quality and reliable performance are critical for ensuring batch-to-batch uniformity in high-temperature processes.

Application

• Glass and Ceramic Manufacturing: Acts as a high-temperature flux and glass network former to lower melting points and improve thermal and chemical resistance in specialty glasses, enamels, and glazes.
• Flame Retardants: Used as a component in intumescent coatings and polymer composites, where it contributes to char formation and smoke suppression.
• Metallurgy: Employed as a fluxing agent in metal refining and welding rod coatings to remove impurities and form stable slags.
• Wood Treatment: Functions as a key ingredient in preservative formulations to protect against fungal decay and insect infestation.
• Agriculture (Micronutrient Fertilizers): Provides a soluble source of boron, an essential micronutrient for plant cell wall formation and development.
• Chemical Synthesis: Serves as a precursor or reactant in the production of other boron-containing compounds and advanced ceramic materials.
• Detergents and Cleaners: Utilized in industrial and institutional cleaning formulations for its buffering and water-softening properties.

Basic Information

Product Name	Tetraboron Disodium Heptaoxide, Hydrate
CAS No.	12267-73-1
Molecular Formula	B4Na2O7 · xH2O
Molecular Weight	Anhydrous: 199.05 g/mol (hydrate weight varies)
Synonyms	Sodium Tetraborate Heptahydrate; Disodium Tetraborate Heptahydrate; Borax Heptahydrate; Sodium Borate Heptahydrate; Sodium Tetraboron Heptaoxide Hydrate; Na2B4O7·7H2O; Tetraboron Disodium Heptaoxide Hydrate; Boric acid (H2B4O7), disodium salt, hydrate
EINECS	235-541-3

Quality Control

Our Tetraboron Disodium Heptaoxide, Hydrate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, chemical composition, and physical properties. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, loss on drying, and impurity profiles. Our quality commitment aligns with industrial standards, and we support customer-specific requirements for traceability and documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption and caking. Keep away from incompatible materials such as strong acids.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as Na2B4O7·xH2O)	≥ 99.0%
Loss on Drying	≤ 2.0%
pH (5% solution)	9.0 - 9.5
Water Insoluble Matter	≤ 0.05%
Chloride (Cl)	≤ 0.01%
Sulfate (SO4)	≤ 0.02%
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.